Crude-oil burner.



H. WOODz CRUDE 0H. BURNER.

APPLlcATIoH mio JULv 6,1916.

` LQB atente May 8, 1917.

HARRY WOOD, F SANTA BARBARA, CALIFORNIA.

CRUDE-OIL BURNER.

Specification of Letters Patent.

Patented May 8, 1917.

Application filed July 6, 1916. Serial No. 107,769.

To all whom t may concern.'

13e it known that I, HARRY lNooD, a citi zen of the United States, residing at Santa Barbara, in the county of Santav Barbara and State of California, have' invented new and useful improvements in Crude- Oil Burners, of which the following is a specification.

This invention relates to a liquid fuel burner and particularly pertains to a burner especially adapted for use with crude petroleum.

It is an obj ect of this invention to provide a liquid fuel burner in which the fuel is adapted to be efficiently vapor-ized and which thus insures a proper combustion of the gaseous fuel generated thereby.

Another object is to provide means whereby the fuel may be satisfactorily carbureted, said means insuring` that the liquid fuel will be thoroughly mixed with air while burning.

Another object is to provide simple means embodied within the burner construction whereby the air utilized in combustion may be preheated prior to its injection into the combustion chamber.

Another object is to provide simple means for regulating` the density of the gaseous fuel generated within the burner.

It is a further object to provide a burner of the above described class which is simple in its construction and operation and is not liable to require attention when used with due care.

Other objects will appear hereinafter.

rlhe invention is illustrated in the accompanying drawings in which:

Figure 1 is a plan view of the burner with a portion of the closure ring broken awayto more clearly show the arrangement of the pre-heating coil.

Fig. 2 is a view in vertical section as seen on the line 2 2 of Fig. 1.

F ig. 3 is a diagrammatical view of the burner drawn upon a reduced scale and illustrates the connection of an air compressor therewith.

Referring to the drawings more particularly, indicates the base portion of the burner within which is formed a vertically disposed cylindrical chamber 11 adapted to be used as a mixing and ignition chamber. The chamber 11 communicates with a concentrically arranged combustion chamber 12 which is formed above the chamber 11 and within which the fuel is ignited. rl`he base portion 10 has an annular iange l?) extending around its entire periphery at a. point adjacent its upper edge, an annular channel let being formed with its lower wall approximately on a. line with the upper face of the flange 13 and surroulul'ing the coinbustion chamber 12. The channel 14 is adapted to be closed at its upper end by means of a closure ring 15 which is fitted with a downwardly extending flange 15 of a size'approximately equal to that of the width of the channel 14E within which it extends. rlhe ring 15 has a central bore which coincides at its lower edge with the upper edge of the combustion chamber 12 and rapidly increases in diameter toward its upper face. This flaring form of opening is provided to allow the flame of the fuel to spread as it leaves the burner.

Fuel is supplied the chamber 1l by a vertically arranged supply tube 17 which is concentric therewith and extends upwardly to a point slightly below the end wall of the combustion chamber 12. Adjustment is given the tube 1'? by means of a threaded portion 18 formed near its lower end and which registers with an internally threaded bore 19 formed through the bottom wall of the base member 10. A lock-nut 20 is provided to lock the tube when it has been adjusted to the proper height to produce a fuel of the correct density. The tube 17 is connected by a suitable pipe fitting to a conduit 21 through which the fuel is supplied and which is controlled by a cut-off valve 22.

Air is supplied the burner through a supply pipe 23 which is preferably connected with a compressor 34C adapted to deliver air thereto at a pressure of approximately five pounds per square inch. The supply pipe 23 is connected by a pipe union 24; to the terminating end 25 of a pre-heating coil 2G which is arranged around and within the channel 14 formed at the upper end of the base member 10. After the coil has been led around the channel several turns, it is led out through a detachable block 27 which also holds the end 25 of the coil and is held in position by a screw 28. The end of the coil is connected by a pipe union 30 to a downwardly extending pipe 31 which in turn is connected by a union 32 to a nozzle 33. The nozzle 33 is disposed horizontally and passes through the base member 10 and into the lower end of the chamber 11. The

nozzle is further positioned so that it delivers its spray tangentially in relation to the wall of the chamber 11 and thereby imparts a gyratory motion to the oil therein thus agitating the oil and thoroughly mixing it with the pre-heated air delivered through the nozzle.

In using the device the burner is set up as particularly shown in Fig. 2 of the drawings, and is connected by its air supply pipe 23 to a suitable compressor 34. The fuel supply pipe 2l is connected to a source of fuel supply and the fuel is delivered therefrom by gravity. rIhe incoming fuel is controlled by the valve 22 and passes through the supply tube 17 from whence it bubbles out into the mixing chamber 11. As the fuel falls into the chamber 11 it is agitated and mixed with the air being delivered from the nozzle 33, this air having been previously heated in the coil 26 within the center of which the fuel is constantly burning. The liquid fuel engaged by the current of air coming from the air nozzle 83 is whirled about the side walls of the mixing chamber l1. At the same time it is ignited and will pass upwardly due to the centrifugal motion imparted to it by the air current. 0n reaching the enlarged combustion chamber l2, it will expand and ll completely said chamber, and perfect combustion of the fuel will be effected, the fuel burning with a white and smokeless flame.

I have shown and described my improved crude oil burner in connection with means for pre-heating the air, and delivering the same to the nozzle 33 under pressure. This is my preferred construction, though good results are also obtained when the pre-heating feature is dispensed with, and air is admitted through nozzle 33 directlyl from the compressor without passing through the heating coil.

It will thus be seen that the burner here provided is particularly adaptable for use with heavy fuel oils and that it will effectively and simply operate to vaporize them so that an eificient combustion may be obtained thereby.

It will be understood by those skilled in the art that various changes in the construction and arrangement of parts may be made without departing from the spirit of my invention as defined in the appended claims.

I claim:

1. A liquid fuel burner, comprising a vertically disposed cylindrical mixing chamber open at the top, a tubular combustion chamber thereabove and co-axial therewith, said combustion chamber having a greater diameter than said mixing chamber, a vortically extending liquid fuel inlet pipe within said mixing chamber, an air inlet in the lower end of said mixing chamber adapted for supplying air in a horizontal plane and tangential to the wall of said mixing chamber, and means incorporated within the burner whereby the air delivered to said air inlet is pre-heated.

3. A liquid fuel burner comprising a vertically disposed tubular mixing chamber, an enlarged tubular combustion chamber thereabove and co-axial therewith, a pre-heating coil adapted to surround said combustion chamber, an air pipe connected to said preheating coil, an air nozzle in communication with said air pipe and adapted to project through the wall. of the mixing chamber and to extend horizontally and tangentially to the lateral wall thereof, a fuel supply pipe adjustably mounted to the bottom wall of the mixing chamber, and to extend vertically therefrom to a point adjacent to and below said combustion chamber.

4. A liquid burner comprising a vertically' disposed tubular mixing chamber, an enlarged combustion chamber thereabove and co-axial therewith, means incorporated in said burner for pre-heating air, an air pipe connected to said means, an air nozzle in communication with said air pipe and projecting through the wall of the mixing chamber and adapted to deliver a current of air tangentially to the wall of said mixing chamber, a vertically adjustable fuel supply pipe having its outlet located adjacent and below said combustion chamber, and means connected to said air pipe for delivering air under pressure.

In testimony whereof I have signed my name to this specilication.

HARRY VOOD.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

